Oh, I generally agree with the concept of lowering the water level to allow more in-flow capacity, especially where spring-rains are relatively guaranteed. The same approach is often used over here. But, we'll occasionally run out of fluridone-activity before the pond-level rises sufficiently to inundate all seed-laden areas; prompting a resurgance of either pest when it eventually does so. I just thought it appropriate to make folks aware of all possibilities. Bottom line: there's risk to either approach, but generally less risk with the pre-treat level-drop. A reduced fluridone concentration in confined water is always preferable to a higher concentration in discharging treated water (yikes). If dropping the pond's level prior to the treatment isn't an option, using a split-treatment technique (Two 1/2-doses @ 3 week intervals) might provide added insurance against an untimely flow-through event.
